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Fluctuation-induced pair density wave in itinerant ferromagnets

Conduit, GJ; Pedder, CJ; Green, AG; (2013) Fluctuation-induced pair density wave in itinerant ferromagnets. Physical Review B , 87 (12) , Article 121112. 10.1103/PhysRevB.87.121112. Green open access

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Abstract

Magnetic fluctuations near to quantum criticality can have profound effects. They lead to characteristic scaling at high temperature which may ultimately give way to a reconstruction of the phase diagram and the formation of new phases at low temperatures. The ferromagnet UGe2 is unstable to p-wave superconducting order—an effect presaged by the superfluidity in 3He—whereas in CeFePO fluctuations drive the formation of spiral magnetic order. Here we develop a general quantum order-by-disorder description of these systems that encompasses both of these instabilities within a unified framework. This allows us to demonstrate that in fact these instabilities intertwine toform a pair density wave.

Type: Article
Title: Fluctuation-induced pair density wave in itinerant ferromagnets
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.87.121112
Publisher version: http://dx.doi.org/10.1103/PhysRevB.87.121112
Language: English
Additional information: ©2013 American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1390991
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